linux/include/asm-parisc/led.h
Grant Grundler 3499495205 [PARISC] Use work queue in LED/LCD driver instead of tasklet.
2.6.12-rc1-pa6 use work queue in LED/LCD driver instead of tasklet.

Main advantage is it allows use of msleep() in the led_LCD_driver to
"atomically" perform two MMIO writes (CMD, then DATA).
Lead to nice cleanup of the main led_work_func() and led_LCD_driver().
Kudos to David for being persistent.

From: David Pye <dmp@davidmpye.dyndns.org>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
2005-10-21 22:46:18 -04:00

42 lines
1.3 KiB
C

#ifndef LED_H
#define LED_H
#define LED7 0x80 /* top (or furthest right) LED */
#define LED6 0x40
#define LED5 0x20
#define LED4 0x10
#define LED3 0x08
#define LED2 0x04
#define LED1 0x02
#define LED0 0x01 /* bottom (or furthest left) LED */
#define LED_LAN_TX LED0 /* for LAN transmit activity */
#define LED_LAN_RCV LED1 /* for LAN receive activity */
#define LED_DISK_IO LED2 /* for disk activity */
#define LED_HEARTBEAT LED3 /* heartbeat */
/* values for pdc_chassis_lcd_info_ret_block.model: */
#define DISPLAY_MODEL_LCD 0 /* KittyHawk LED or LCD */
#define DISPLAY_MODEL_NONE 1 /* no LED or LCD */
#define DISPLAY_MODEL_LASI 2 /* LASI style 8 bit LED */
#define DISPLAY_MODEL_OLD_ASP 0x7F /* faked: ASP style 8 x 1 bit LED (only very old ASP versions) */
#define LED_CMD_REG_NONE 0 /* NULL == no addr for the cmd register */
/* register_led_driver() */
int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg);
/* registers the LED regions for procfs */
void __init register_led_regions(void);
#ifdef CONFIG_CHASSIS_LCD_LED
/* writes a string to the LCD display (if possible on this h/w) */
int lcd_print(char *str);
#else
#define lcd_print(str)
#endif
/* main LED initialization function (uses PDC) */
int __init led_init(void);
#endif /* LED_H */